课程表course中的课程名cname不允许重名，应该给它加上（）约束。

A.select * from course where cname like '%_design%'

B.select * from course where cname like '%_design%' escape ''

C.select * from course where cname like '%#_design%' escape '#'

D.select * from course where cname like '%*_design%' escape '*'

A.Create View ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course

B.Create View ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 from Course

C.Create Proc ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course

D.Create Index ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course

A.INSERT INTO Course(Cno,Cname,Cfen) VALUES (C2,″数据库″,3)

B.INSERT INTO Course(Cno,Cname,Cfen ) VALUES(″C2″,″数据库″, ″2″)

C.INSERT INTO Course(Cname,Cfen )VALUES(″数据库″,3)

D.INSERT INTO Course(Cno,Cname )VALUES(″C2″,″数据库″)